package com.demo.morning;

import java.text.SimpleDateFormat;
import java.util.Date;

//模拟倒计时
public class TestSleep2 {
    public static void main(String[] args) throws InterruptedException {
         tenDowm();

//        Date startTime = new Date(System.currentTimeMillis());//获取系统当前时间
//        while (true) {
//            Thread.sleep(1000);
//            System.out.println(new SimpleDateFormat("HH:mm:ss").format(startTime));
//            startTime = new Date(System.currentTimeMillis());//更新当前时间
//        }
    }
    //模拟倒计时
    public static void tenDowm() throws InterruptedException {
        int num = 10;
        while (true) {
            Thread.sleep(1000);
            System.out.println(num--);
            if (num <= 0) {
                break;
            }
        }
    }
}

